Oxy-acetylene torch



1932- A. F. JENKINS 1,869,215

OXY-ACETYLENE TORCH Filed Feb. 1, 1929 v gwue'ntoz Patented, July '26,1932 UNITED STATES PATENT oFFicE.

Application fled February 1, 1989. Serial No. 888,810.

The resent invention relates to iI nprovements in cutting and weldingtips for oxyace lene or other torches using mixed gases for eating metalto be cut or welded. The

invention will be illustrated and described in connection with a cuttingtip although by omitting the oxygen passage, the same tip may be usedfor heating'or welding purposes. The object of the invention is toproduce a tip having one or more relatively large bores therethrough,each provided with a restricted outlet and with a restricted inletpassage, the gases to be mixed in said bore or bores. The object of theinvention is accomplished by boring through thebody of the ti with arelatively'large drill, boring with a or drill from the outlet end ofthe tip, and partially closing the rear end of the large bore or boresby means of a ring inserted in the base through which perforations aredrilled connecting with the bores.

The invention will be described more in detail in connection with theaccompanying drawing,in which:

Figure 1 is a longitudinal section through a tip as it appears in theprocess of manufacture;

Figure 2 is a similar section through a completed tip;

Figure 3 is a plan view of Figure 2; and Figure 4 is a section on theline 4-4: of Figure 2.

Referring to the drawing, 10 indicates a. cuttmg tip of the usualexternal form provided with a central passage 11 for cutting oxygenhavin a somewhat reduced outlet 12. Surroun mg the central bore 11 are aseries of longitudinal bores 13 which are provided with reduced outlets14. The bores 13 are conveniently drilled from the rear or base of thetip, and each is supplied with fuel and oxidizmg gases, such asacetylene and oxygen, through an inclined passage 15 'and an axialpassage 16. Preferably, the axial passage admits oxygen under 'pressurewhich acts to draw in the fuel gas in the manner of an injector, thegases mixing in the enlarged bore 13.

As a convenient means of creating the reduced inlet passages 16, a deepannular groove 17 is cut in the base of the tip and a T e passages 16are bored in the-ring either before or after its insertion in the ti Inthe manufacture of the torch tip,

erably insert a ring 18' of considerable length,

as .shown in Figure 1, with the passages 16 .bored in it. The ring isthen turned down until the groove 17 is formed in the base of the tip asshown in Figure 2. A like groove 19 is also formed in the base of thetip to receive the fuel ases, and'the inclined passages 15are bored romthe .groove 19 to the enlarged bores 13. The perforations 15 and 16 mayvary in tips for different purposes, but

they are always much smaller than the bores 13 whereby the gases may mixthoroughl in passing to the outlets 14'. It will berev1 ent that b stopin oil the central oxygen pasy g g sage 11, 12, t e tipdescribed may beused for heating purposes only, or for welding.

'Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is 1. A tip for a torch of the characterdescribed having a plurality of bores of relatively large diameter withrestricted outlets,

the base of the tip having seated therein a ring provided withrestrlcted erforations' communicating with the rear 0 said bores andhaving additional restricted perforations communicating with said boresbelow the ring.

2. A tip for a cutting torch, having a central oxygen passage and aplurality of parallel longitudinal bores therethrough, each bore havln arestricted outlet, the base of the tip having seated therein a ringhaving. a plurality of perforations of less diameter than the diameterofsaid bores and respectively communicating with said bores, andadditional inclined gas passages leadin into saidbores below said ringwhereby the ores serve as mixing chambers.

3. A torch tip of the class described comprising a body portion having aseating sur- I prefglhtly fitting ring 18 forced into the groove.

face at one end and. a plurality of substanintersecting the bottom ofsaid groove, and

an annular sleeve seated and frictionally retained in said groove, saidsleeve having a plurality of ducts extending therethrough, which ductsregister respectively with the ducts in the body but are of lesscross-sectional area, the annular outer end surface of the sleeve lyingbelow the seating surface of the tip and the sleeve providing a singleelement for efi'ecting the restriction of all of-the aforementionedducts.

In testimony whereof I hereunto affix my signature.

ALEXANDER F. JENKINS.

